Screen.



A. M. LEONI.

SCREEN.

APPLICATION r1150 MAR. 28. 1913.

Patented July 11, 1916.

Z $HEETSSHEETI Arrow A. M. LEONI.

SCREEN.

APPLICATION FILED MAR. 28. 1913.

Patented July 11, 1916.

2 SHEETS-SHEET 2.

g A 770mm VJ Aunts-es M. mom, or Emmet, New Y onK.

Specification of Let t er s J Application filed Maren as, 1913. seen no. 737,302;

T all'whomz't may 00mm;

Be it known thatI, ALPHoNsn M. LEONI, a subject of the King of Italy, residing at 230 Livingston avenue, Brooklyn, New York, United States of America, have invented certain new and useful Improvements in Screens, of which the following is a clear, full, and exact description.

This invention relates to an improvement on the invention disclosed in my patent application for sewage screening apparatus, in which I appear as a joint inventor, which was filed February 1, 1913, Serial Number 745,639. In the invention disclosed in the application referred to, the screen was formed of sections of perforated plate and asthe screen operated it raised the sewage material. Cooperating with the screen we provided a' transverse convey'e'r which removed the material from'the screen. Under some circumstances it is desirable to provide a screen offine mesh and to provide a transverse conveyer having a flexible or fibrous brushing member touching the screen.

One of the objects of the present invention is to provide for constructing a screening apparatus having the features men tioned, and arranged in such a way as to prevent any possibility ofthe fibers of the brushing member becoming caught in the space between the joints of the screen section.

The general object of the invention is to provide a simple and efficient screening apparatus.

The invention consists in the general com bination of parts (marine features of said parts hereinafter described, all of which contribute to produce an efiicient screening apparatus.

A preferred embodiment of my invention will be particularly described in the following specification, while the broad scope of my invention will be pointed out in the appended claims. I V

In the drawings, Figure 1 is a plan showing a short portion of the screen at one of its joints; Fig. 2 is a section taken through parts of the screen at a joint between two of the sections, and showing a portion of the periphery of the wheel about which the screen. passes; Fig. 3 is a view similar to Fig. 2 but showing the screen sections disposed at an angle to each other and illustrating the manner in which the space between the adjacent edges of the screen sections is kept closed; Fig. 4 is a view showing a portion of the screen diagrammatically andp'art ially in section, andalso illustrating the conveyer which cooperates with the screen to remove themat'erial] therefrom;

Fig. 5 is a side elevation showinga portion of thescrew-convey'er; Fig. 6 is a side elevation showing a portion of the brush memher; and Fig. 7' is a cross-section through the brush member.

Referring more particularly to the parts, the screen -1 as illustrated in Fig. I is composed of sections 2; The bodies of these sections 2 are preferably the form of frames 3 asillustrated in Fig. 1; that is, they are preferably of grid form and present enlarged openings 4;. The ends of these bodies are preferably formed into rolls 5 which clasp the transverse rods or b'ars'6, said bars having extremities attached to links 7 and 8', which form continuous chains at the edges of the screen. The material out of which the bodies of the screens are formed is preferably slightly resilient and also noncorrodible. This material is preferably monel-metal. The screens are provided with covers 9 of a fine mesh, which are also preferably of monel-metal. This niesh may be fine gage as thirty to the inch. The extreme ends of the covers 9 are not attached to the bodiesof the sections but simply extend around and conform to the curvedextensions or rolls 5, but throughout the body of'each sectionthe covers are secured by a plurality of fasteners such as the rivets 10. The adjacentends of the sections leave a slight gap therebetween, and this gap is filled by a; filler or transverse saddle bar 11'. This bar preferably presents a substantially flat] outer face or plate 12, from the side edges-6f which curved flanges oi saddles'13 extend around and fit against the adjacent edges of the mesh covers 9. The extreme edges of the mesh covers may be turned over the edges of the saddle bars as indicated at '14:, or they may be otherwise secured to the edges of the saddle bars.

The screen is made in a continuous belt as in the application referred, to above, and at the ends of the screen it passes around wheels having sockets 15 on the periphery thereof which are equidistant from each other and correspond to the distance between the pairs of bars 6, so that as the screen advances the bars come into the sockets 15. In order to seat the bars in the sockets I provide a channel bar 16 which receivesthe rolls 5 and the bars 6. In the straight portions of the screen the curved extensions or rolls 5 approach near to each other so that the saddles 13 and the saddle bars are near together. When the screen is passing around one of the wheels how ever, the adjacent sections form an angle with each other as indicated in Fig. 3, and widens the gap between the rolls 5; but the saddle bars 11 expand resiliently so as to fill the gap and also keep the unattached end portions of the gauze covers 9 taut on the curved extensions.

The saddle bars or fillers 11 by filling the gaps between the screen sections prevent the accumulation at these points of the material being raised, and they also prevent the brush fibers 17 of the brush 18 from be coming entangled in the joints.

The conveyer or screw 18 is preferably of the form shown in Fig. 41-, comprising a central tubular member 19 to which a helical vane 20 is secured. The fibers 17 of the brush member are preferably formed of loops 21 around a wire or bar 22 and held in place by side pieces 23 of any suitable flexible material. In applying the brush 24 to the screw the side pieces 23 are clamped against the vane by a clamping member 25, which permits the fibers to project beyond the periphery of the screw. If desired the back end of the brush may be backed up by a helical channel bar 26 which is secured to the vane 20. The middle portion of the screw will present substantially the appearance shown in Fig. 5.

It is understood that the embodiment of the invention described above is only one of the many embodiments or forms the invention may take, and I do not wish to be limited in thepractice of my invention nor in the scope of my claims to the particular embodiment described above.

What I claim as new is:

1. A screen adapted to raise and carry material on the upper surface thereof, said screen comprising sections jointed together, in combination with a transversely disposed conveyer for removing the material having a brush engaging said sections, and fillers disposed between said sections and preventing said brush from becoming caught between said sections.

2. A. screen composed of connected sections, said sections consisting of frames having openings therethrough and a covering of mesh secured to the frame, the adjacent ends of said sections having curved extensions, and members lying in the space between said extensions and filling the same.

3. A screen consisting of a plurality of sections, said sections having curved extensions, means for connecting said extensions, and a filler disposed in the space between said extensions freely movable on said extensions.

4. A screen consisting of sections connected together, each section consisting of a grid with a mesh cover secured thereto, said grids having curved extensions lying adjacent to each other, said covers lying on and conforming to said curved extensions, and fillers received in the spaces between said extensions conforming to said curved extensions and'holding the ends of said cover in position thereupon.

5. A screen composed of sections, said sections having curved extensions, transverse bars receiving said extensions, links connecting said bars and forming a chain, and filler bars disposed between said curved extensions extending transversely of said screen and filling the spaces between said sections.

6. An endless sewage screen consisting of two endless chains with bars connecting the same, frames having substantially spirally curved extensions at their ends lying adjacent to each other, said extensions having rolls clasping said bars, said frames having means for screening the sewage.

7. An endless sewage screen consisting of two endless chains with transverse bars connecting the same, frames having spirally curved ends with rolls formed at said curved ends.

Signed at New York city, New York, this 20 day of March, 1913.

'ALPHONSE M. LEONI.

Witnesses BEATRICE MIRVIS, ABRAM BERNSTEIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, D. C. 

